Cadillac STS-V Series Forum Discussion, 2008 cadillac STS-v transmission issues in Cadillac V-Series Forums; Hello Everyone, I am new to this forum and first of all would like to say hi.
My 08 STS-V ...

2008 cadillac STS-v transmission issues

Hello Everyone, I am new to this forum and first of all would like to say hi.

My 08 STS-V only has 35000 miles on it and it feels as if the transmission is "wondering" in second gear. I Dont think its normal and i am scared to take it to cadillac because it is out of warranty by time :-(. I had the transmission serviced at cadiallac at 30k miles and now this. What the car is doing is in first it will spin, and once boost comes on in second, the car will start lunging, almost like the clutches are slipping and then grabbing and then slipping again. It only does it under hard acceleration and this really sucks since the car has such low miles.

Has anyone else here had this issue? I have tuesday off, im gunna take it in, but I will not lie, I am scared shitless of the bill :-/

Re: 2008 cadillac STS-v transmission issues

mine does the same thing SOMETIMES. its not the tranny slipping because the RPMS dont skyrocket yet the car doesnt move forward. we are thinking belt slip is causing the issues mine is having, will be addressing and see if that fixed.

Re: 2008 cadillac STS-v transmission issues

Wiz321654, I'm sorry to see you've been experiencing these concerns! Taking your STS-V to your dealer is a good next step, as their specialized technicians can run the proper diagnostic tests and document your frustrations. If you would like any assistance working with your dealer at any point, please email me at Katie_Lucille@gmexpert.com! I'm always happy to look into your concerns further for you.

Wiz321654, I'm sorry to see you've been experiencing these concerns! Taking your STS-V to your dealer is a good next step, as their specialized technicians can run the proper diagnostic tests and document your frustrations. If you would like any assistance working with your dealer at any point, please email me at Katie_Lucille@gmexpert.com! I'm always happy to look into your concerns further for you.

Best,

Katie
Cadillac Customer Service

That's interesting my transmission does the same thing and the cadillac dealer said to not worry about it.

Re: 2008 cadillac STS-v transmission issues

Rwwrrr, thank you for posting this. We do recommend bringing your vehicle concerns to your dealer's attention initially for their expert input, so I'm pleased you have already consulted with your dealer on this concern. If you're still concerned regarding your STS and would like Customer Service to contact your dealer to follow up on your behalf, please let me know.

Re: 2008 cadillac STS-v transmission issues

Well, I took it in to the dealer and had them make some other repairs while it's still under warranty. They said the tcu needed updating and that should fix the problem... Low and behold it didn't... While the car feels like it shifts more firm now, it still doesn't feel right... It's only in second gear, it will kick the tires loose and then shift to 3rd(what it feels like atleast) and then it will down shift back to seconds and spin again. I'll have to take it back Monday, I wish I went to sewell Cadillac.. They are much closer but I've always dealt with Massey.. I'll keep y'all informed

Re: 2008 cadillac STS-v transmission issues

Try driving it in manual and shift it your self with out spinning the tires. I bet it will feel fine shift crisp and no slipping. The set up in the trans tune from factory will up shift at the first sine of wheel spin under a hard start to keep out of redline. Find a good tuner and get the trans tuned to the way you drive the car. It took 5 try's to get mine just right but it shifts up/down with out looking for other gears now. It changed the way the whole car drives it feels more like a sports car than the big 4 door it is.

Ps: I always drive with the tc/sc all the way off. It could be the tc stepping in also. Just some things to try.

Re: 2008 cadillac STS-v transmission issues

Pm sent

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I want to say its just the tc/sc kicking in and doing it. Not the trans. Park the car press and hold the tc/sc button for 10-15s till it says sc off in the info center not just the dash icon. Then try the same turn.